| (19) |
 |
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(11) |
EP 1 798 838 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
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02.10.2013 Bulletin 2013/40 |
| (43) |
Date of publication A2: |
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20.06.2007 Bulletin 2007/25 |
| (22) |
Date of filing: 19.12.2006 |
|
| (51) |
International Patent Classification (IPC):
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| (84) |
Designated Contracting States: |
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AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE
SI SK TR |
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Designated Extension States: |
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AL BA HR MK RS |
| (30) |
Priority: |
19.12.2005 US 751625 P
15.12.2006 US 611571
|
| (71) |
Applicant: O2Micro, Inc. |
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Santa Clara, CA 95054 (US) |
|
| (72) |
Inventors: |
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- Stoicesou, Emanuel
Santa Clara, CA 95054 (US)
- Bucur, Constantin
Santa Clara, CA 95051 (US)
|
| (74) |
Representative: Jungen, Rolf |
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Lippert, Stachow & Partner
Frankenforster Strasse 135-137
51427 Bergisch Gladbach
51427 Bergisch Gladbach (DE) |
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| |
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(57) The present disclosure provides a method for filtering in a cordless electrical device.
The method may include coupling a filter network, a microcontroller and a plurality
of battery cells having a cell voltage and a current. The method may further include
operatively connecting at least one switched capacitor low-pass filter to the plurality
of battery cells, the at least one switched capacitor low-pass filter configured to
receive a signal from the filter network. The method may also include filtering the
signal from the filter network, delivering a filtered signal input to an ADC and generating
an output from the ADC.